Abstract:

The anonymity and dynamics of the P2P (peer to peer) network bring many security problem, The traditional trust manage model can not satisfy the P2P environment commendably. This paper proposes a recommendation-based trust model in P2P network, the model distinguishes the ability of peer between providing service and offering recommend, uses reputation value to express the ability of offering recommend, the peer’s trust value is assessed according to direct trust value, other peer’s recommendation trust value and the corresponding penalty value, then the peer decide which to choose. The simulation experiment results show that the recommendation-based trust model is able to assess the peer’s trust value more effectively, surpass the traditional trust management model in the transaction success ratio.

Key words: P2P, trust, reputation, trust model, recommendation-based trust model